Multisensor with battery

[Dominic Bonneau]

Hi i'm new and I was wondering if it's possible to make a door sensor with PIR, light and temperature sensor all power by battery ?

Is it possible to combine all that AND have decent battery life ?

finaly what do I need ??

thanks

[mfalkvidd]

Hi @Dominic-Bonneau, welcome to the forum!

It depends on your definition of decent but yes it can be done. I wouldn't recommend to to e everything at once as a first project though. Better to get a single-purpose sensor working and then add the other features when you know it works. That way you can learn while doing.

Information on motion:
http://forum.mysensors.org/topic/2956/stable-battery-pir-sensor/
http://www.mysensors.org/build/motion

Light:
http://www.mysensors.org/build/light

Temperature:
http://www.mysensors.org/build/temp

Combining sketches:
http://forum.mysensors.org/topic/2597/combining-mysensors-examples

EDIT: And the page on battery mentioned by @martinhjelmare below: http://www.mysensors.org/build/battery

[Dominic Bonneau]

Thanks ! I know that some component/sensor are more power efficient and for some build i'm better to use X specific sensor

any tips ?

[martinhjelmare]

@Dominic-Bonneau

Hi!

Most examples on the mysensors build pages use components suitable for 5 V which is not optimal for a battery driven device. The most common PIR component can be modified to use 3.3 V though.

There are lots of advice for building battery driven sensors in the forum and one page on the mysensors web dedicated to this. Many DIY openhardware build PCBs that specialize in battery power can be found on the openhardware site linked in the forum.

But I suggest you follow @mfalkvidd 's advice and don't go for too much or too hard in your first build. Just get your first simple sensor together, and take it from there.